Lock.



0. SOHNI & H. MEHL.

Loox. APPLICATION FILED NOV. 6,1908.

Patented Feb. 16, 1909.

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Loox.

APPLICATION FILED NOV. 6,1908. 91 2,91 O, Patented Feb. 16, 1909.

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OTTO SOHNI AND HENRY MEHL, OF BUFFALO, NEW YORK.

LOCK.

Specication o Letters Fatent.

Application filed November 6, 1908.

Patented Feb. 16, 1909.

Serial No. 461,357.

To all whom it may Concern.'

Be it known that we, OTTO SouNr and HENRY MEHL, citizens oi thcUnited States, resideits of Buffalo, in the county of Erie and State of New York, have made certain new and useful lnvention in Locks; and we declare the followii to .be a full, clear, and exact description olf' the same, such as will enable others skilled in the art to which it appertains to make and use the invention, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part ot this speciiication.

Figure 1 is a iroit view or a car haviiig the invention applied thereto and 'partly broken away and in section to show the releasing mechanism for the padlock. `Fig. 2 is a section on the line 2 2 ll ig. 1, with the padlock not in section ani showiig parts broken awayT and the air cylinder' in section. Fig. 3 is a similar view oi the padlock and parts adjaceiit on a larger scale. Fig. 4 is a section on the line 4 4, liig. 3. Fig. 5 is a fr nt view ot' the padlock with one side thereof bent downward. Fig. 6 is a plan view ot the blank 'for the padlock body. Fig. 7 is a perspective view of the padlock. vFig. 8 is a perspective view of the releasing plate.

The invention has relation to locks particularly designed tor use upon freight car doors, and to means for releasing the lock through the action oi' fluid pressure.

The invention consists in the novel construction and combinations ol parts as hereinafter set forth.

In the accompanying drawings, illustrating the invention, the letter a, designates the body of the lock, of hollow character and capable of being bent into form from a blank of sheet metal shown in Fig. 6 of the drawings. The top a', of said body is formed with two perforations a2 a2, for the reception of the legs of the staplee'form shackle b. A strong V or staple-form spring c, is contained within such body, the diverging downward extending branches c', c', of said spring having engagement with notches d, d, of the shackle legs, said notches having each an inclined upper wall d', and a horizontal lower wall d2, as shown. A bolt f, extends centrally through per- Jr'orations f', f', of opposite sides g, g, of the body a, at the upper portion thereof, said bolt also extending beneath the upper portion or body ot the staple-iorm spring and aiding in maintaining Vaid spring in position. The lock is solidlyT bolted to a back plate 7L, by means ol" the aforesaid bolt f, and lock and back plate are rigidl;T bolted to the door post i, by means ot bolts i', t', at the top ol the back plate and a bolt y', passirg through. alined portorations y, j', in the sides ot' the lock at the lower portion thereof and an alined perforation ji, in the back plate.

7c, designates a releasing plate located within the lock body at ore side thereof and having inward extending lugs lt", it', having contact with the divcrgnig branches of the sprirg C, said plate havii..g a ceLtral per- 'loi'ation Z, between said lugs and being alined with respect to a slot l', lormcd in the rear side wall g, of the lock body and a slot Z2, in the back plate.

ln order that the lock may be released when desired a pipe m, is provided, preferably located between the inner and outer walls oi the car and having` communication with a source ol compressed air or the like, having a suitable valve (not shown), and which is located in somo place not accessible to passengers or mischievous persons. rllhis pipe, which has a double turn m, therein lor safety purposes, communicates with a cylinder mi, having a piston n, and a piston rod n, extending upward and connected at n2, to a lever 0, at one side of the lock and car door, and which is lulcrumed to the inside portion ol the car or between the outer and inner car walls, with its pointed outer end o, in engagement with a perforation p, at one end of a short lever p, having an opposite reduced end passing through a perforation g', of an inward extencing bracket q, in alinement with the slots l@ and Zi, and througl'i said slots into engagement with the perforation l, of the releasing plate. Thus upon Operation oli the valve in the I'luid pressure pipe to admit the compressed air into the cylinder m, the piston will be thrust upward, actuating the aforesa'l lovers to cause the releasing plate to move downward, and through the lugs 7c', r, forcing inward the branches of the spring c, and releasing the staple-form shackle, which may then be moved upward to release the hasp of the lock, when the car door may be opened. The lever o, should be of weight sufficient to cause the plungei1 or aii1 piston to tall after l release of the shaclle ready for fepeated action when the door is again locked.

Owing to the manner in 'which the body oi the lock is oimed, that is to say oi a single piece of sheet metal having one side g, t upward and connected the opposite side g', by an integral bottom g2, the sides g, g', being solidly connected at the top by the-strong bolt or iivet j, it is piactically impossible to feice said body open. by any or-:linaiy means.

The lock may be made of any u desired by machinery and innished to tne trade at small cost.

Ha ing thus descifibed oni` invent-tien, What We claim as new anil lesive to secine by Letteis Patent is:

l. A lock having a shackle, Within the locl body havin l en ment 'with said shackle, and means for ieleasing said spring device fiom the shackle by the oneiation of fluid pessuie.

2. A lecl having a staple-ioiin shaclale, a spying having downward extending branches having locking engagement `virith the shackle legs, and ineans for ieleasing sai-Ll spring device iioni the shackle by thv resse-lie.

operation ol" Fluid n 3. e lool; having shackle, a spi'ing hav ing don'nivaid ext ding branch havin locking engr-.gement mth the sl l plate Within the locl body hav il engagement with said bi. n l

the spring from the shackle by the action ilni d pressure..

e. A lock having a shackle, e spring having a donf'nnai'd extending branch having loci;- ing engagement With a ci the shackle, a plate Within the lool body having a lng in engagement with said branch ol the spring, lever mechanism having engagement with from sheet metal in one piece, the side Wallssai body having connection by an integral bottoni, and the top of said body having peiioiations, a shackle having legs engaging saidL pei't'oiations, a spring having a downward extending banch having locking engagement 'with a shackle leg, a iivet bolt connecting opposite side Walls ol! said body at the upper potion thereof and extending beneath 'the body of said spring, and means tot i'cieasinff said spring from the shackle by 'the actimi oi Fluid pressure.

6. i incl; having a hollow body formed frein s et metal in' one piece, the side Walls ci said body having connection by an integra bottoni, and the top of said. body having peitoiations, a shackle having legs engaging aid perfor-ations, a spiin g having downward extenning bi'anclies having locking engagement with the shackle legs, a iivet bolt connecting opposite side Walls of said locl at. the appel portion tlieieoi and extending beneath the body of said sp1-ing, a releasing plate Within the lock body having lugs in enggeinent with the spiing branches, lever mechanism having engagement With said releasing plate, and means foi' operating said levei mechanism through the action of fluid pressure to release said shackle.

ln testimony whereof We aiiix our signatures, in presence of two witnesses.

@TTG SHNI. HENRY MEHL.

,Yitneses l i Otto Sohni: S. ii. lwfiLLnNan, S. A. LUNeHiND.

T/vitnesses foi1 Henry Mehl: CLYDE HUNTER, Jol-1N U. MnscAL. 

